Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3b9ab19ddf4db6d…

MALICIOUS

PDF

66.5 KB Created: 2021-09-18 14:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 26d68aab1108f1dfa29906080048f6e2 SHA-1: 382a17b270fadf69a533569ea21cb1de0bc4738b SHA-256: c3b9ab19ddf4db6dc07291be19c4d1483eaacfee6f746f5ae06677c1b0e78321
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6960

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://srmhomes.com/images/bulk_images/files/28008699516.pdf In PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/fupobegejuvutonu.pdfIn PDF document text
    • https://bisleriwheel.genefied.co/ckfinder/userfiles/files/dozowefegitamiz.pdfIn PDF document text
    • http://gaziogluenerji.com/images_upload/files/91202270115.pdfIn PDF document text
    • https://osiindia.org/ckfinder/userfiles/files/69268852243.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/73907826644.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/fixofijefudosa.pdfIn PDF document text
    • https://vinacoma3.vn/userfiles/file/39784893346.pdfIn PDF document text
    • http://gaia-onlus.org/userfiles/file/11165450645.pdfIn PDF document text
    • http://fitviewer.de/files/file/52383875960.pdfIn PDF document text
    • https://websbag.com/uploads/files/fumametuvakekumiwabawux.pdfIn PDF document text
    • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tamisudumulom.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/11791339292.pdfIn PDF document text
    • https://oolong-dining-co.com/webroot/editor-uploads/files/77392890447.pdfIn PDF document text
    • http://sostrevalli.it/userfiles/files/63996402797.pdfIn PDF document text
    • http://pointerboards.com/uploads/admin/files/vemomiwej.pdfIn PDF document text
    • http://xn--2e0b95unoa536adofm5h.com/userfiles/file/gazabedaxabajuwebimu.pdfIn PDF document text
    • https://paulogomeslda.com/userfiles/file/4091982017.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/19d7ae7ef4d8e8f8d89301f3fbf4cfe4/84638673516.pdfIn PDF document text
    • https://3eyamaichi.com/upload/ckfinder_temp/files/20210905165925.pdfIn PDF document text
    • https://fceresources.com/ckfinder/userfiles/files/14546090916.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/vamiboreguguzixu.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/95986179485.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=fast+and+furious+6+full+movie+onlinePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BE 10828 bytes
SHA-256: c849b6f52580dacab1705d9569866179f9b55cf20ebd3eaa7765df817ed2f1d0

Open this report in the interactive analyzer, or submit your own file for analysis.